Xperia Z1 enjoys 16 GB of internal memory, expandable by up to 64 GB using a Micro SD card and 2GB of RAM. On the other part, HTC One X+ has 32 GB and 64 GB internal memory variants with no aditional memory. Having 1 GB of RAM.

Camera

With autofocus, LED flash, 2MP secondary camera and 20.7MP rear camera, Xperia Z1 conquers HTC One X+, which has autofocus, LED flash, but only 8MP primary camera and 1.6MP secondary one.

Battery

Xperia Z1 is using a non-removable Li-Ion 2300 mAh battery, while HTC One X+ is using a non-removable Li-Ion 2100 mAh